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Molybdenum. The value of the molybdenum for all of the samples <br />was <1 ppm. The Wyoming Land Quality Division has set the sus- <br />pect level for molybdenum at values greater than 1.0 ppm. No <br />problems with molybdenum are expected. <br />Nickel. The values for nickel found in the top and bottom mate- <br />rial of the C-Seam are 5.2 and 0.76 ppm. Nickel is relatively <br />insoluble, and should present no problem with respect to leach- <br />ing. Therefore, no problems are anticipated with respect to <br />nickel. <br />Selenium. The values for selenium are relatively low. No prob- <br />lems will be encountered with groundwater quality with respect to <br />selenium. <br />Zinc. The values for zinc in the top and bottom material of the <br />C- Seam are 9.36 and 1.49 ppm. The values for zinc in the B-Seam <br />floor coal, B-Seam roof and the temporary waste storage piles #1 <br />and #2 are <1, 1, 2 and 2. The Montana Guidelines have estab- <br />lished the suspect level for zinc of 40 ppm; therefore, no prob- <br />lems are anticipated with respect to zinc. <br />Phosphorus. Because of the low concentration of phosphorus in <br />the top and bottom material of the C-Seam, no possible contribu- <br />tion of dissolved phosphorus to groundwater is anticipated. <br />Mercury. Mercury values are low; all well below the limit of 0.5 <br />ppm set forth in Montana Guidelines. No problems with ground- <br />. water quality will be encountered with respect to mercury. <br />Total Carbonate (CaCo3). The values for total carbonate in the <br />top and bottom material of the C-Seam are 0.9 and 1.1 ppm. These <br />values are well below the 30 ppm limit set forth in the Wyoming <br />Guidelines. No possible problem with respect to groundwater is <br />anticipated. <br />Total Combustible Solids and Total Non-Combustible Solids. The <br />results of these analyses indicate that there is an amount of <br />coal in the samples; however, no problems are anticipated as a <br />result of these analyses. <br />• 2.04-27 <br />Revised June 29, 1990 <br />